Not your normal push hands but how to use this training method to gain self defense. Not actually using the movements from push hands but a completely different way of doing it to gain self defense. Gaining self-defense from push hands is an abstract thing. We use push hands as a kind of abstract way of fighting.
All of the fighting methods are there, all of the movement is there, but no actual fighting! The 'fighting' is done abstractly which is the best way for the sub-conscious mind to learn about fighting, because your fighting method then becomes completely reflex. And push hands at an advanced level such as shown on this tape is one of the only methods to turn your fighting art into reflex actions.